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US 2023/0142415 A1Published application
Fish Oil Recovery From Aquatic Biomass
AssigneeAquafood AB
InventorsMehdi ABDOLLAHI, Ingrid UNDELAND
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AssigneeAquafood AB
InventorsMehdi ABDOLLAHI, Ingrid UNDELAND
Estimating the term…
A method for recovering fish oil from aquatic biomass under cold conditions, the method comprising the steps of; providing an aquatic biomass; producing a minced aquatic biomass by mincing the aquatic biomass; providing an aqueous suspension of the minced aquatic biomass by mixing and/or homogenizing the minced aquatic biomass in an aqueous solution; adjusting the pH of said aqueous suspension to an extreme high pH or an extreme low pH; separating the aqueous suspension into a supernatant comprising a lower density emulsion fraction substantially comprising oil, aqueous solution and emulsified proteins, and a higher density fraction comprising substantially solubilized proteins, and optionally a pellet comprising collagenous components; collecting the lower density emulsion fraction; separating the lower density emulsion fraction into an oil phase and an aqueous phase; and collecting the oil from said oil phase.
A method for recovering fish oil from aquatic biomass under cold conditions, the method comprising the steps of:
The method according to any one of the preceding claims, wherein the extreme high pH is from about 9 to 13, preferably from about 11 to about 13.
The method according to any one of the preceding claims, wherein the extreme low pH is from about 2 to about 3.5.
The method according to any one of the preceding claims, wherein the separating the lower density emulsion fraction comprises:
The method according to any one of the preceding claims, the method further comprising recovery of proteins comprising the steps of:
The method according to any one of the preceding claims, wherein the proteins recovered with the method retain their gel-forming properties.
The method according to any one of the preceding claims, the method further comprising recovering the collagenous components.
The method according to any one of the preceding claims, wherein the aquatic biomass is fish.
The method according to any one of the preceding claims, wherein the aquatic biomass are fish filleting by-products, preferably selected from head, tail, backbone, skin, flap, viscera, gut, roe, blood or any combination thereof.
The method according to any one of the preceding claims, wherein the aquatic biomass originates from white muscle lean fish, dark muscle fatty fish, salmonid fish or any combination thereof.
The method according to any one of the preceding claims, wherein the aquatic biomass originates from salmon, herring, cod, mackerel, pilchard, trout, albacore, anchovy, sardine or tuna or any other fatty fish species.
Dependencies are inferred from the claim text.